Tension lever



April 16, 1929. CAMAGN] 1,709,115

TENSION LEVER Fil ed April 50, 1928 INVENTOH mafia amour ATTORNEX Patented Apr. 16, 1929.

UNITED STATES PATENT oFFlcE.

MARIO CAMAGNI, OF PATERSON, NEW JERSEY.

TENS ON LEVER.

Application filed April 30, 1928. serial No. 273,852.

This invention relates to tension devices for shuttles of the class in which, with a line of fixed. pins or other guides, there is a lever having a plurality'of guides and normally held by an elastic in such relationto the fixed guides .that the filling, reaching in alternation around the fixed guides and the guides of the lever, extends normally-in zig-zag arrangement, and the object is to provide a lever for a tension device of this class in which the shank and guide or guides thereof, orfi't may be the shank and guide orguides thereof and also the fulcrum part of the. lever, may be formed from ablank of stiff sheet material:' thus reducing the cost of manufacture of such devicesand yet function with full efficiency in the shuttle.

Inthe drawing, F'g. 1 is a plan of a shuttle, partly broken away, embodying the improved tension level; Fig. 2 is a plan of the blank from which the lever is formed; Fig. 3 is aside elevation of the lever in partly completed form; i

Fig. 4: is a plan of the completed lever; Fig. 5 a right hand end elevation thereof;'a'11d 'j Fig. 6 is a section online 6-6, Fig. 5. In the usual cavity 1 of the shuttle body 2 is a fulcruming pin 3 for the improved tension lever (designated bythe character 4 I in that figure), which byan elastic band 5 is normally held retracted with respect to a line ,of pins or thread guides 6 so that, all in a well known way, the filling, which is threaded around these pins and alternately through the guides onthe lever, is normally held zigzag, the lever yielding toward the line of pins when the filling is pulled upon, as when the shuttle is in action.

- The said lever is formed (here completely) from a blank of sheet material which comprises an elongated portion 7 and eyes 8 arranged in succession along said portion and each projecting from one long edge thereof;

in the present example all the eyesproject from the samelong edge of the portion 7 and the material of each around the opening 9 thereof throughwhichin the completed device the filling reeves is endless'or continuous, although this is not indispensible if in the completed device the several eyes'as guides 7 coact to retain the filling in them.

With the blank so formcd'each eye 8 is,

twisted so that the material thereof will lie filling.

.shankis off and forms. at the side thereof ad o ning the support a guiding surface 10 for the filling, the said guiding surface preferably being rounded of convex by bending said bent-off portion itself around an axis crossihgthe path of travel of the filling, or here the axis of the shank. The purpose is to avoid undue abrasion or cutting, of the I This I believe is a novel form of filling or thread guide independently of its adaptation to a tension lever. Inthe pre ferredform said surface extends straight and also parallel with the axis of the lever,

so thatthe filling does not tend to trackin any particular portion of the surfacef It is not material how'the fulcrum portion and the lever arm to which the elastic 5 is attached are formed, but in the present case instead of forming them from a separate piece of wire as in my Patent No. 990,334 I show them as formed from integral parts of the blank and substantially the same as in my application for patent for a shuttle tension Serial No. 273,851, to wit The shank-formin g portion 7 is extended'at one end and has op posite ribs 11 projecting therefrom, and said portion being given aquarter-turn twist, as at 7 these are bent off in the direction relatively opposite to the guides already described on spaced lines parallel with the axis of the shank and formed with alined holes 12 for the bearing pin 3, the ribs thus becoming the fulcrum portion of the lever; and the end 13 of said extension is provided with holes 14 and this is bent off in the same direction as the ribs 11, one of its holes then serving to receive the elastic 5 which may be knotted as shown in Fig. 1.

'Having thus fully described my invention, what I claim is:

-1. A tension lever' for a shuttle tension including a shank. and a filling guide, said shank and guide being formed from a blank ill) of stiff sheet material comprising an elongated portion to form the shank and an eye projecting from one long edge thereof, said eye being twisted so that the material thereof lies in a plane intersecting the axis of the shank and the eye thus forms the guide.

2. A tension lever for a shuttle tension including a shank and a pluralityof alined filling guides, said shank and guides being formed from a blank of stifi sheet material comprising an elongated portion to form said shank and eyes arranged in succession along said portion and each projecting from one long edge thereof, each eye being twisted so that the material thereof lies in a plane intersecting the axis of the shank and thus forms one of said guides. I

c 3. A tension lever fora shuttle tension including a shank and a plurality of aligned filling guides, said shankand guides being formed from a blank of stiff sheet material comprising an elongated portion to form said shank and eyes arranged insuccessionalong said portion and .each projecting from the same edge thereof, each eye being twisted so that the material thereof lies in aplane ins I terseoting the axis of the'sha'nk and thus forms one of'said guides. j j 5 4. A tension lever fora shuttle tension 1ncluding a shank, a filling guide and a'fu'l- 'crum part, said shank, guideand fulcrum M v part belng formed froma blank of stiff sheet material comprising an elongated portion to form said shank, an eye projecting from one long edge thereof, and a .pairof apertured ribs projecting from the respective long edges of said portion, said eye beingt v'visted sothat I the material lies in a plane intersecting the the material lies in apla'ne intersecting the axis of said portion and thus forms the guide, the material of said portion being twisted between the guide and'said ribs and the latter beingbent off both in the same direction and thus forming the fulcrum part.

' 6. A sheet metal gui ling device for a shutcomprising a support and aneye project ing froinon'e edge thereof, the portion of the eye remote from the support being bent off and having'the surface of such bent-off portion relatively adjoining the support forming'the filling guiding surface of the eye.

7 A sheet metal guiding device fora shuttie comprising a support and an eye projecting from 'one edge thereof, the portion of the eye remote from the support being bent ofi and having the surface o'f' su'ch bent-off portion relatively adjoining the support forming the filling guiding surface of the eye, and said surface being convex around an axis crossing the path of travel of the filling.

In testimony whereof I afiiX my signature.

MARIO CAMAGNI. 

